Healing Category
B7-33
THE SCARLESS HEALER
Relaxin-2 analog B7-33
B7-33 is an engineered version of relaxin-2, a hormone that prevents tissue scarring. It works by stopping fibroblasts from depositing excess collagen and scar tissue. Unlike natural relaxin, B7-33 provides the anti-fibrotic benefits without causing significant blood pressure drops, making it safer for long-term use.
B7-33 Evidence Snapshot
How these guides are reviewed- Regulatory status
- Not FDA approved · research use only
- Dosing guidance
- Reviewed by our clinical team
- Linked evidence
- Sources pending
- Content updated
- May 8, 2026
Dose and schedule recommendations shown below come from The Peptide App Clinical Team. Research links are provided so readers can inspect the supporting evidence directly.
Quick Answers About B7-33
Is B7-33 FDA approved?
No. This profile records B7-33 as not FDA approved and for research use only.
More context
Review the regulatory and source details on this page for the current context.
What dose does The Peptide App Clinical Team recommend for B7-33?
Dose: 250 mcg daily.
More context
Schedule: daily. Cycle: 1 week on, 1 week off. This is clinical-team guidance for reference and does not replace individualized instructions from a licensed clinician.
What research supports this B7-33 guide?
No linked research sources are currently available on this guide.
More context
Treat the profile as provisional until supporting sources are published.
What are the side effects of B7-33?
Reported side effects of B7-33 include Localized injection site reactions.
More context
They are reported or occasional reactions, not a prediction of what any one person will experience.
Is B7-33 safe?
B7-33 has an editorial safety grade of B (Good Safety).
More context
Designed to be safer than native relaxin with fewer cardiovascular effects. Safety depends on dose, sourcing, health history and medical supervision, so this page does not call it safe for personal use.
Studied Effects & Mechanisms
Anti-Fibrotic
Stops fibroblasts from producing excess scar tissue
Matrix Remodeling
Activates enzymes that break down excess collagen
Anti-Inflammatory
Reduces inflammatory cytokines while boosting protective ones
Tissue Regeneration
Promotes new blood vessel growth and tissue healing
Who is this for
People with pulmonary fibrosis · Those with cardiac fibrosis or stiffness · Liver fibrosis patients · Anyone concerned about tissue scarring · Post-surgical healing support
B7-33 price snapshot
In-stock prices from 7 vendors, checked Oct 14, 2026.
- Vendors
- 7
- Listings
- 8
- Observed range
- $20–$360
Market evidence
B7-33 product testing and COAs
We found certificates from some of the B7-33 vendors we track. Based on the certificates our crawler found; vendors may publish more than we index. Research on this page describes the molecule. Vendor certificates concern particular market samples or batches; they do not change the research evidence or establish clinical safety, sterility, or suitability for use.
The clinic network
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